131502730321 has 8 divisors (see below), whose sum is σ = 132211201760. Its totient is φ = 130794538752.

The previous prime is 131502730319. The next prime is 131502730349. The reversal of 131502730321 is 123037205131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131502730321 - 2¹ = 131502730319 is a prime.

It is a super-4 number, since 4×131502730321⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131502730321.

It is not an unprimeable number, because it can be changed into a prime (131532730321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909046 + ... + 1043728.

It is an arithmetic number, because the mean of its divisors is an integer number (16526400220).

Almost surely, 2^131502730321 is an apocalyptic number.

It is an amenable number.

131502730321 is a deficient number, since it is larger than the sum of its proper divisors (708471439).

131502730321 is a wasteful number, since it uses less digits than its factorization.

131502730321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139935.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 131502730321 its reverse (123037205131), we get a palindrome (254539935452).

The spelling of 131502730321 in words is "one hundred thirty-one billion, five hundred two million, seven hundred thirty thousand, three hundred twenty-one".